Question

I am returning a static string from a stored procedure (in SQL Server 2008) as below:

select 'abcdefgh.........xyz'

If the static string length is exceeding more than some limit (eg:8kb) then only partial string (eg:7kb) is returned to the .net apps.

Though I tried in different ways like assigning static string to varchar(max) and selecting the variable, is still returning only partial string.

I should return complete string which could be of max of 5mb. So, main concerns:

1. What is the max string length I can return from a stored procedure
2. How to return 5 mb string from stored procedure to .net apps.

I request someone can help me to resolve this issue.
please find the code below

 using (SqlCommand command = new SqlCommand(Source.GetExportRecordSP, Connection))
            {
                command.CommandType = CommandType.StoredProcedure;
                command.Parameters.Add(new SqlParameter("@CandidateRecordID ", SqlDbType.NVarChar, 32)).Value = record;
                try
                {
                    if (Connection.State != ConnectionState.Open)
                    {
                        Connection.Open();
                    }
                    using (SqlDataReader reader = command.ExecuteReader())
                    {
                    if(reader.Read())
                        {
                            xmlRecord = new XmlDocument();
                            xmlRecord.LoadXml(reader.GetString(0));
                        }
                    }
                }
                catch (Exception Ex)
                {
                    Logging.WriteError(string.Format("Error while retrieving the Record \"{0}\" details from Database. Exception: {1} ", Ex.ToString()));
                    throw;
                }               
            }

Thanks in advance geeks.

Answer 1

Thanks for support, I found 1 fix for this at
http://www.sqlservercentral.com/Forums/Topic350590-145-1.aspx

Fix is, declare a variable, and should be initlized to empty string and concatenated with the main string.

  DECLARE @test varchar(MAX);
set @test =''
 select  @test = @test + '<Invoice>.....'

If the string length is <8000 it will work without the above approach.

Thanks all.